The former machine behind the "ESTEC's bottleneck", "grid medialab1.estec.esa.int" (195.169.140.50), is not accessible at the moment (this is not the first case). ...

E mail sent by Toby Rodwell, 1 Mar 05. "The PERT enters a new phase today, as the Case Manager(s) will now contribute a steady 1 FTE rather than just 2 or 3 hours ...

I have receivede bunch of emails from MarcoMarletta about EsaEstecSite from Thomas.Ketchin@esa.int, Mr. Monleon is no longer available. We have received schema of ...

TobyRodwell requests that the PERT investigates anomalously large delays between GEANT PoPs as reported by the IPPM system. A new issue IppmDelayedPackets was created ...

No progress was made AndrijaCondor 02 May 2005

No news on open cases, due to holidays MarcoMarletta 05 Jan 2005

TobyRodwell wants to know what is the cause of these single high delay events. My assumption is that it has to do with the end hosts and not the network inbetween ...

Sent e mail to contact persons for each active case and gathered info. I agree with SimonLeinen about breefing new CM. quote from SimonLeinen e mail: "Maybe we need ...

LauraLeone 03 Nov 2004 No issues today

TobyRodwell 04 Apr 2005 There are 3 main objectives for this week: Contact all end customers of unresolved cases to determine whether their cases can be progressed ...

RobertNedbal 04 Feb 2005

No news on open cases, due to holidays MarcoMarletta 05 Jan 2005

AsymmetricThroughput soon to be closed (input from SimonLeinen). SimonLeinen added a "Current Status" section in which he tried to describe the current state of knowledge ...

TobyRodwell 05 Apr 2005 eVLBI Case Wrote to SURFnet and NORDUnet to get info on the network topology between GEANT and JIVE IPPM detected delays Roland ...

A new file with ESTEC (NL) Web100 applet results has been uploaded to test1.rtf The results show: The slowest link in the end to end path is a 100 Mbps Half duplex ...

Followed Up on IppmDelayedPackets AndrijaCondor 05 May 2005

TobyRodwell 06 Apr 2005 eVBLI Network info from SURFnet (Niels den Otter) and NORDUnet (Håvard Eidnes) GEANT Delays Comment from Roland Karch (DFN IPPM ...

TobyRodwell 07 Jan 2005 Although GARR was meant to be providing the duty Case Manager for this week, at a late stage it was noted that 6 Jan is a public holiday in ...

VladimirSmotlacha 09 Mar 2005

AndrijaCondor 06 May 2005

TobyRodwell 07 Apr 2005 eVLBI Sent out diagram of eVLBI topology (that is, paths bewteen eVLBI sites) Continued bwctl tests interesting results between ...

MiguelSotos 08 Feb 2005 Synagon graphs of eVLBI tests, 4 Feb 2005 The link below is publicly accessible look for the hyper link under 'Files' called 'OPS 05 014 ...

TobyRodwell 08 Apr 2005 PTS Testing There appears to be a bug in editing PTS tickets. This caused the Sandbox PTS instance to lock up, which meant further testing ...

MiguelSotos 08 Feb 2005 A certificate is needed to access the PTS

Put Synagon plots on the Wiki In order to stimulate discussion of the EvlbiMtuTest case, I tried to make the Synagon plots more accessible. Toby had posted these ...

RobertNedbal 09 Mar 2005

MiguelSotos 10 Feb 2005 There has been today new tests in eVLBI.

As Marco wrote, the duty CM can contact directly mr. Monleon (and Marco in case FTP access details are needed). So, the necessary contact information for the AsymmetricThroughput ...

We're still waiting for results from the "bottleneck hunting" which was performed at Estec site in February (which was probably not succesful after all), but no current ...

Waiting to know if the end customers, of the AsymmetricThroughput Case, have been informed of our thought regarding the possible cause of the Asymmetric Throughputs ...

Today I acquired access to the problematic ESTEC host (FTP only) from Marco. I decided to perform some performance tests from our (CESNET) side of view. Results, packet ...

RobertNedbal 14 Mar 2005

The PACE.DraftMinutes for the Pert Meeting are already avaiable. AnaPinto 13 May 2005

TobyRodwell 11 Nov 2004 It would perhaps be more accurate to say "no submitted issues". Today Stephan Kraft (DFN) reported back to myself and Hank Nussbacher (IUCC ...

The PTS looks really nice, and the new PERT website too. Surfing the KB to get some input for the opened cases. Joined the PERT VC after 1 1/2 hour spent fighting ...

This was my first day as a case manager. issue4 (eVLBI tests) no new progress issue3 (Assymetric throughput) PavelCimbal acquired FTP access to the ESTEC ...

SvenUbik 13 Nov 2004

no new progress in the case issue4 (eVLBI tests) at issue3 (Assymetric throughput) I have tried to get access to some machines along the path, but I don't have ...

Added Arpad Szomoru's report regarding eVLBI real time unbuffered tests performed last Feb 10 on http://beta.dante.org.uk:8080/pert/issue4 No good news, there are ...

Synagon, the GEANT tool used to record EvlbiMtuTest router counters, showed it is inappropriate. Details on http://beta.dante.org.uk:8080/pert/issue4 MarcoMarletta ...

TobyRodwell 17 Nov 2004 Maybe people from GARR have found the solition for issue1 MiguelSotos Clarification about 'solution of a case' and 'explanation' MiguelSotos ...

An email from SimonLeinen shed some light on NeustrelitzEsaSite, which is 600km far from Cologne, where is situated the access link to DFN. ESA was reporting an RTT ...

Today I found out more about how EsaEstecSite is connected to SURFnet (and through SURFnet to GEANT). The bigger ESA sites such as EsaEsrinSite (Frascati, IT) and ...

The first day of SWITCH's week of duty as case manager was cut short by a public holiday in the afternoon. However, the SWITCH PERT handled an issue DownloadMicrosoftComSlow ...

Today has been a busy day... ChrisWelti has been working on an interesting SWITCH internal performance problem, where the original symptom was slow access to Web pages ...

GEANT NOC (ticket #652625) reported low performance for data stream received by CERN from Karlsruhe(DFN) and CNAF through the MPLS's tunnel Karcern Frankfurt Geneva ...

TWiki Changes Last week, the PERT Pilot Knowledge Base, PERT Diary, and the brand new PACE Wiki were remodeled upon a suggestion from AntoninKral (thanks!). While ...

In the AsymmetricThroughput case, all indications point to an issue at EsaEstecSite. But we don't know much about that site, except that they have a 1 Gb/s connection ...

SvenUbik 02 Dec 2004

TobyRodwell 01 Nov 2004 The start of the GN2 pilot Pert. Due to a Bank Holidy in Italy DANTE (Toby Rodwell) is carrying out the first day's duty in place of GARR. ...

Trying to collect information which will be necessary for the future progress in the AsymmetricThroughput case (Marco won't be available between 23/13 3/1). Awaiting ...

Today I was reviewing the AsymmetricThroughput case and contacted Marco if we could run a packet capture on the laptop at ESTEC that he has remote access on. We will ...

SvenUbik 22 Dec 2004

MiguelSotos 21 Feb 2005

Thanks to remote access to a laptop in the ESTEC LAN (contact MarcoMarletta for an account) we have some new results in the AsymmetricThroughput case. The results ...

I asked Marco to supply e mails of people who reported the AsymmetricThroughput issue to get further information about this opened case. I will add them to the Issue ...

MiguelSotos 22 Feb 2005 Discussion about how we can considered a ticket 'cancelled' and level of solution.

VladimirSmotlacha 23 Dec 2004

TobyRodwell 23 Nov 2004 The pilot PERT's first case is still open, even though it has effectively been resolved. This is probably be because PERT staff are not aware ...

Details on MkV architecture found at http://web.haystack.mit.edu/mark5/Mark5.htm MarcoMarletta 25 Jan 2005

Another issue with ESA has been investigated in the past few days. ESA's italian site, EsaEsrinSite, is performing bulk tests to various ESA sites throughout Europe ...

The issue was solved 19 Nov 2004, but as Toby stated, there is some difficulty in managing the tools. At least it is not a 5 minutes matter, but it needs some study ...

TobyRodwell 30 Dec 2004 Sub pages should be created if the date is made a link

Today I set up the and PERTDiary.WebHome Webs in the TWiki. SimonLeinen 27 Oct 2004

TobyRodwell 30 Dec 2004 Sub pages should be created if the date is made a link

Copied the PERT TWiki Webs from my laptop to the server (cemp1.switch.ch). SimonLeinen 28 Oct 2004 Testing of Simons Wiki Installation by adding some profile and ...

TobyRodwell 30 Dec 2004 Sub pages should be created if the date is made a link

SvenUbik 30 Nov 2004

VladimirSmotlacha 02 Dec 2004 Issue 'evlbi traffic': New measurement was done on 1 Dec in direction SE NL. Graphs of the eVLBI throughput are available.

No issues today.. waiting for the first case to be raised.. MarcoMarletta 02 Nov 2004

TobyRodwell 30 Dec 2004 Sub pages should be created if the date is made a link

PavelCimbal 30 Nov 2004

VladimirSmotlacha 03 Dec 2004 Issue 'eVLBI frames': no new information, no new ideas Issue 'AsymmetricThroughput': half duplex on some local network segment is a possible ...

What we could do today: on AsymmetricThroughput Contact MarcoMarletta and the CESNET folks to obtain contact data at the ESTEC and ESRIN sites DONE The ...

Plans for today: EvlbiMtuTest Find out more about the Mark 5 system. ONGOING ChrisWelti found a host of information about the Mark 5 system using Google ...

EvlbiMtuTest ChrisWelti has his day off, so we'll learn more about the Mark 5 system tomorrow. AsymmetricThroughput Still no news from MarcoMarletta SimonLeinen ...

SvenUbik 09 Nov 2004

EvlbiMtuTest Added some interesting PDF documents on the Mark 5 system used in the eVLBI transfers to the Round Up tracker AsymmetricThroughput Still no news ...

SvenUbik 10 Nov 2004

AnaPinto 06 May 2005

Contact addresses for this AsymmetricThroughput case are: MarcoMarletta marco.marletta@garr.it Mr. Monleon at ESTEC Ricardo.Berto.Monleon@esa.int ...

According to Klaus Desinger's mail to pert discuss, the end systems involved in the DEISA throughput tests run IBM's AIX 5.2 with the following TCP/IP settings: $ ...

DEISA Throughput Reduction Problem Summary On 21 April 2005, Thomas Schmid (DFN) sent a report (DeisaThrougputReductionOriginalDescription) to the pert report mailing ...

DeisaThroughputReduction Original Problem Description For reference, here is the message submitted to the pert report mailing list by Thomas Schmid on 21 April 2005 ...

Slow downloads from download.microsoft.com A customer complained about abysmally slow downloads of applications from Microsoft. Upon our requests for specific information ...

ESA's ESRIN Site ESRIN is located in Frascati, Italy, south of Rome. ESRIN is connected to GARR with a 32 Mbps ATM PVC. Here is a diagram of GARR's Frascati PoP, ...

ESA's ESTEC Site ESTEC is a large ESA site in Noordwijk, The Netherlands. Noordwijk is on the Dutch North Sea coast near Leiden. The machines involved in the throughput ...

The Bologna EVLBI site is the 32m Medicina Radiotelescope. It is part of CNR's Istituto di Radioastronomia (IRA). It is connected to GARR's Bologna Node. The normal ...

Issue Summary The customer is the European Very Long Baseline Interferometry (EVLBI) Network, a group of astronomers who correlate data from several European radiotelescopes ...

List of Future Case Managers The PERT Schedule is now kept on the PTS: https://www.pert.geant2.net/pert/pertSchedule.do SimonLeinen 30 May 2005

Hispeed 6000 A broadband Internet access provider has started offering a new high speed package at 6000 kb/s. But using typical bandwidth testers such as the Web100 ...

For every day of duty as a PERT Case Manager (CM), you should add a new index entry to this page. Please add the entry on the top of the list ("inverse chronological ...

TobyRodwell points out that the GEANT IPPM network monitoring system repeatedly reports large OWD values for sequences of test packets between particular sets of ...

Hank Nussbacher (of IUCC) has noticed some strange packet loss results being recorded by the GEANT IPPM network monitoring that have been recently deployed in Frankfurt ...

Jodrell Bank (UK) to JIVE BWCTL Tests, 19 and 20 May BWCTL tests were run on the afternoon of 19 May adn i the early hours of 20 May, sending test data from JB (192 ...

JIVE to JB Tests, a.m. 19 May 2005 These tests were run in the early hours of 19 May (0100 UTC to 0300 UTC). A 2 minute test was run every 10 minutes, alternating ...

JB to JIVE Tests, May 2005 Introduction In May 2005 a series of network performance tests were conducted between measurement points in Jodrell Bank (UK) and JIVE ...

The PERTDiary is used to document the day to day work of the PERT. SimonLeinen 27 Oct 2004

MiguelSotos 21 Feb 2005

ESA's Neustrelitz Site Neustrelitz is located in Germany, north of Berlin. Neustrelitz is connected to DFN through DLR in Cologne. Here is a traceroute from backnoc ...

Older PERTDiary Entries 16 May 2005 DANTE become CMs see PTS Diary for subsequent entries May 2005 PERT Meeting DANTE office Cambridge AnaPinto ...

PACE Wiki Cannot be Updated from FIRST Conference in Singapore Abstract On 27 June 2005, WilfriedWoeber complained that he cannot update PACE Wiki pages while logged ...

List of Past PERT Case Managers 01 Nov: DANTE TobyRodwell 02 05 Nov: GARR MarcoMarletta 08 12 Nov: CESNET PavelCimbal 15 19 Nov: RedIRIS ...

PavelCimbal 31 Jan 2005

Slow Wiki Uploads Note: The official documentation for this issue is on the PERT Ticket System (PTS). This page has been created to provide convenient storage for ...

1. Click 'Edit' on the main PERTDiary web page (WebHome). Add a new line directly above the previous day's entry using the same format i.e. 3 spaces, asterix, 2 open ...

SWITCH to JB and JIVE Tests, May 2005 Subsequent to the measurements of Toby Rodwell, on 19/20 May 2005, I performed some BWCTL tests from a test box within the SWITCH ...

Welcome to the home of TWiki.PERTDiary. This is a web based collaboration area for documenting the day to day work of the GN2 Pilot PERT. NEW: PACE.TopicPERT ...

See also the faster WebTopicList

// Welcome Register Web Web Home Changes Topics Index Search TWiki Webs

This is a subscription service to be automatically notified by e mail when topics change in this PERTDiary web. This is a convenient service, so you do not have ...

TWiki.PERTDiary Web Preferences The following settings are web preferences of the TWiki.PERTDiary web. These preferences overwrite the site level preferences ...

TWiki's PERTDiary web /view/PERTDiary The PERTDiary web of TWiki. TWiki is a Web Based Collaboration Platform for the Corporate World.

Statistics for PERTDiary Web Month: Topic views: Topic saves: File uploads: Most popular topic views: Top contributors for topic save and ...

See also the verbose WebIndex.